CTET 2 Math and Science Feb 2015 Paper

Question : 58 of 120

Marks: +1, -0

The value of a machine which was purchased two years ago, depreciates at 12% per annum. If its present value is ₹ 9,680, for how much was it purchased ?

₹ 11,350.50
₹ 12,142.60
₹ 12,500
₹ 10,200

Validate

Solution:

P=A(1-\;\;{r}/{100})^{t}

(Where A = Amount, P = Principle r = rate, t = time)

9680=A(1-\;\;{12}/{100})^{2}

⇒A=\;\;{9680×100×100}/{88×88}=₹12500

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